-Screenshot Album will hold all of your screenshots, up to 100 and won't be visible to other users
-Play Journal will keep a record of your own experiences and you'll be able to write your own journal entries.
-Communities will undergo an overhaul. The main community for each game will be categorized to make browsing more easier to access: Play Journal Entries, Drawings, Discussions
-You will no longer be able to post to your activity feed after the redesign
-Limitations on posting quickly in succession of other posts will be less strict going forward. The new limit for posting is 30 posts or comments per day, with in-game posts not being included in these 30 posts.
Sounds pretty good to me! I'm interested in the journal and screenshot album the most.